The question is whether these people deserve to be called "Perl programmers".
No. The question is whether or not they will be paid to be a Perl programmer. If they are, they will fsck up your code. It's a pragmatic matter.
Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.
